{
  "manageEntity": {
    "action": "Update",
    "entityId": "764368248",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x442e8bc3ff8177472f53a54c67963e4062957b4810398c2e2bee820dab2123d8",
    "signature": "0x9195e144c3ea84d03e71fe701783763620c08e71b902e715db5ef0622775cedd3feed7bc5796fd621b3548a862b1536a06b83316f3307e26c6aca865f61d780b1b",
    "signer": "0xae12381d94e24Ea1748819F9d981b419043D98c2",
    "userId": "764368248"
  }
}